Automatic tempo-regulator.



W.. H. REBS. AUTOMATIC TEMPO BBGULATOR.

MPLIOATIONHLBD APB..27,1912. v

' v E-intented July 16, 1912.

.2 SHEETS-SHTEET 1.

lllllllilll nu Inventor:

Y y I ,ZWAtty W. H. BEES; 4AUTOMATIC T EMPO REGULATOR;

2 .9 1M ,7E. 6.H. 1% ys.. mm JH dS .mm2 n a D..

APPLIOATION` FILED .AIB.. 27,1191Z-.v

ff J2.' 36

In Ventor:

`Atty,

iff/.62M byQ/ l Sary.

UNITED STATES PATENT oEEioE.

WILLIAM'H. BEES, OF NEW YORK, N. Y.

.AUTOMATIC TEMPO-REGULATOR.

Specification of Letters Patent.

Patented July 16, 1912.

Application lestApril 27, 1912. Serial-No. 693,611.

To all whom it may concern:

Be it known that I, `TILLLUI H. REBS, a citizen of the United States,and a resiydent of New York city, borough of Mang well known and aregenerally used in playing attachments.

hattan, in the county of Xew York and State of New York, have inventedcertain new and useful Improvements in Automatic Tempo-Regulators, ofwhich the following is a specification. i

This invention relates to new and useful improvements in automaticltempo regulators, for use in connection with the air motors for movingperforated musicsheets in playing attachments for musical instruments. A

The object of this invention is to provide a new and improved automatictempo regulator for the above purposes which is simple in construction,andwhich is capable of changing the speed of the air motor, from fasterto slower or slower to faster, either slowly or suddenly as may benecesin a reliable and effective manner.

In theaccompanying drawings 'in which like -letters of referenceindicate like parts in all the figures: Figure 1 is a longitudi nalsectional elevation of myimproved automat-ic tempo regulator inconnection with the motor for moving the music sheet `and thecont-rolling valve for this motor. Fig. 2 is a vertical transversesectional view through the tempo regulator and through the valvemechanism for the same and the tracker board. Fig. 3 .is a plan view ofpart of the tracker and part of the perforated music sheet, parts beingbroken out and others shown in section.

The motor 1 for moving the perforated music sheet is an air motor andmay be of any conventional construction provided with a crank shaft 2and e series of 'motor bellows 3 for operating the crank shaft.- i

From the crnk shaft 2 the power is transmittal to the perforated musicsheet' rolls or spools in any wellknown manner.v Air is exhausted fromthe bellows of this motor through a tube 4 into the valve chest 5 andfrom the latter into anexhaust tube 6 and' from the chest 5 to the tube6.

the opening can be adjustedto any size by a slide valve 7 in the valvecasing, so that by moving the slide valve to the left the effective areafor the passage of air is increased and the motor caused to run faster,and by moving the valve to the rightthe effective area is decreased andthe motor is caused to run slower. The parts so far described are alsoOn a base plate 8, twosets of standards 9-are mounted and in said fourstandards two parallel screws 1'0 are mounted. and each screw carries acog wheel 11, which cog wheels are engaged thus compelling the screws torotate in opposite directions. One of the screws carries at its end a'sprocket wheel 12 or other power transmitting contrivance for thepurpose of rotating said screw from a small pneumatic or other motor 13which runs at uniform speed. A

rod 14 is mounted on grooved rollers 15 on the base plate 8 so as topermit of moving this rod lengthwise with as little friction aspossible. Oney end of this rod isi'pivotally connected with a lever 16pivoted at 17 and connected at its opposite end with a rod 18l attachedto the previously mentioned valve 7 so that as this rod 14 is movedlengthwise in one direction or the other the valve 17 is movedcorrespondingly. A hub 19 is secured on the rod 14 and from the same anarm 20 projects upward and to said arm a T-shaped yoke 21 is pivoted at22 and is provided in the lower end of its upright member with a recess23 forreceiving the upper end of a spring 24 secured at 25 to the arm 20of the hub 19, so that this spring will normally hold the verticalmember 22 ofthe 'yoke 21 in vertical alinement with the arm 20.' Theyoke is provided in each arm at 26 with a threaded nut portion which canengage the corresponding screw 1() vbelow it,4 but which nut portionsare normally out offengagement with the screw when the vertical memberof the T-shaped' yoke is in perfect alinement with the 'arm 20. Theouter end of each arm of the yoke 21 is connected by a rod 27 withthe'movable board 28fof a pneumatic 29, which pneumatics are secured onrods 30 which run on grooved rollers 31 on the base plate 8, The'rods 30and rod 14 are connected by cross pieces 32 soth'at the rods 30 and ,14jtravel'uniformly in the direction of their length in either d1-r'e'ction. Each'bellows'29 is connected by a flexible' tube 33 with aval-ve casing containing a controlling valve :35 whlch 1s operated vfrom-a diaphragm'BG, `the chamber of which is connected by a tube 37 with aduct 38 or 3f) in a tracker board 4() over which the perforated musicsheet 44 passes. There being two valves two tracker ducts 3S and 3.()there are two rows 4l and 42 of perforationsv in the music sheet. as thepaper covers the holes 3S and 39 the valvesl 35 keep the bellows 29 opento the atmosphere and t-he bellows are expanded and both ends of theyoke 2l are raised, that is, the yoke held in such position that neitherof the two screw parts 2G is engaged with the screw below it andconsequently the yoke and the parts connected therewith are at astandstill and the valve 7 controlling` the air motor for the musicalinstruments retains its position.

If the speed of the motor 3 is to be increased. a hole in the row 4l ofthe note sheets is provided and when this hole or slot registers withthe duct 3S air passing through the conduit 37 and acting on thediaphragm .5G seats the valve 35 and the right hand pneumatic 29 is nowexhausted and pulls down the right hand end of the T-shape yoke 21against the tension of the spring .2,4 and engagesthe right hand screw'part 2G of the yoke with the corresponding screw and this causes amovement of the yoke, the rods 14 and 30 to the right, whereby thecontrolling valve 7 of the motor 3 is opened to a greater extent andsuch engagement of the part 26 with the screw as described abovecontinues for the length of time that the slot 4l registers with theduct 3S, that is to say, the greater the length of the slot 4l. thegreater will be the movement of the valve 7 toward the open position.Vhen the end of the slot 4l arrives at the duct 88 the valve 35 is movedoutward b v suction. permitting air to pass into the right hand bellows29, which expands, permitting the spring 24 to throw the yoke intonormal disengaged position. In this manner the valve 7 can be opened fora greater or'less distance and remains in the position into which it hasbeen adjusted y until one of the screws is again engaged with a threadedpart of the T-shaped yoke 2l.

Then the speed of the motor is to be decreased a hele or slot in the row421 is broughtJ into engagement with the tracker duct- 39, and the lefthand screw part 26, on the yoke, is engaged with the left hand screw,and this causes the movement of the two shafts 14 and 30 with the yoketo the left, for a greater or less distance corresponding to the lengthof the slot in the music sheet, and thereby the valve 7 is moved agreater or less distance toward the closed position and remains in suchposition after the slot or hole 42 has come out of register with theduct 39, and so remains until by the registering of one of the holes AslongI of the rows 4l or 42 inthe note sheet with one of the trackerducts or 39 the rod 14 connected with the valve 7 is again shifted inone direction or the other.

Having described my invention what I claim as new and desire to secureby Letters Patenti is,:-'

l. The combination with a motor and its controlling valve, of twoscrews, means for rotating them in opposite direction, a nicmber capableof engagement with either screw, and mams for operating said motorcontrolling valve from said member, substantially as set forth.

2. The combination with a motor and its controlling valve, of twoscrews, means for rotating them in opposite directions, a member capableof engagement with either screw, and pneumatic means for engaging saidmember with either screw, and means for operating said controlling valvefrom said member, substantially as set forth. 3. The combination with amotor and its controlling valve, of two screws, means for rotating themin opposite directions, a member capable of engagement with eitherscrew, means for operating the motor controlling valve from said member,and pneumatic means for engaging said member with either screw, andmeans for controlling said pneumatic means from a perforated musicsheet, substantially as set forth.

4. The combination with a motor and its controlling valve, of twoparallel screws, means for rotating saidk screw in opposite directions,a member capable of engagement vwith either screw, a connection betweensaid member and the motor controlling valve, two pneumatic mechanismsfor shifting the member to be engaged with the screws, and means vforcontrolling said pneumatic motor mechanism from a perforated musicsheet, substantially as set forth.

- 5. The combination with a motor and its controlling valve, of alongitudinally movable rod connected with said valve, two parallelscrews, means for rotating lthem in opposite directions, a shiftableyoke carried by the rod connected with the motor controlling valve, andmeans for shifting said yoke foi connection with either screw, andpneumatic means controlled by the music sheet for operating the meansfor shifting the yoke, substantially as set forth.

6. The combination with a motor and its controlling valve, of alongitudinally movable rod connected with the valve, two parallelscrews, means for rotating them in opposite directions, and an armcarried by the rod connected with the motor valve, a yoke pivoted onsaid arm and having two threaded parts adapted to be engaged with thescrews, a spring for holding said yoke in normal position disengagedfrom the screws,

yoke,

two pneumatic means for engaging either end of the yoke Wit-li a screw,and means for controlling said pneumatic means from the perforated musicsheet, substantially as set forth.

7. The combination with a motor and its controlling valve, of a rodmounted to move vlongitudinally and connected with the valve,

a rod at each side of the above mentioned rod, cross pleces connectingthe three rods,

' an arm on the middle rod, a yoke pivoted -on 'said arm and providedwith two screw ling valve from a perforated music sheet, substantiallyas set forth.

S. The combination with a motor and its controlling valve, of a rodconnected with` the controlling valve, two devices for moving said i'odiii'opposite directions, pneumatic means for connecting the rodwitheitlier one otn said devices and means' for controlling theoperation of said pneumatic means from a tracker by means of aperforated music sheet.

Signed at New York city, in the county of Xew- York and State of NewYork this 8th day of Apr. A. D. 1912.

WILLIAM H. mins.

, lVitnesses:

A. IHGDONNELL, Liiovo EVERDEENE,

